The difference between 3240 and fr4 epoxy board

Both 3240 and fr4 are common epoxy boards. Although they belong to the same type of material, the production process and product characteristics are completely different.

How to better distinguish various grades of boards in epoxy boards? Epoxy board is usually divided into: 3240 epoxy board, fr4 epoxy board. The materials and production processes used in these two types of boards are different. The manufacturer will explain the knowledge of epoxy board for you.

　　1. 3240 epoxy board generic name: 3240 epoxy phenolic glass cloth laminate. It is made of electrical glass cloth impregnated with epoxy resin, dried and hot pressed. Epoxy resin generally refers to organic polymer compounds containing two or more epoxy groups in the molecule. Except for a few, their relative molecular mass is not high. The molecular structure of epoxy resin is characterized by the active epoxy group in the molecular chain. The epoxy group can be located at the end, in the middle or in a cyclic structure of the molecular chain.

　　The cured epoxy resin system is an excellent insulating material with high dielectric properties, surface leakage resistance and arc resistance. 3240 epoxy board is widely used in mechanical, electronic and electrical applications. It is suitable for mechanical, electrical, electronic, electrical and other fields. It is also used for the processing of insulating parts and processed into various insulating parts and equipment insulating structural parts.

　　2. The main material of fr4 epoxy board is imported prepreg, the colors are white, yellow and green. It still has high mechanical strength at room temperature 150℃. Good electrical performance in dry and wet state, flame retardant, used in electrical, electronic and other industries for insulating structural parts, carefully manufactured with imported raw materials, domestic presses and standard processes; main specifications are 1000*2000 mm 1020mm*1220mm. Because of the advantages of raw materials, it guarantees high quality and low price, and timely delivery. It has a solid customer base at home and abroad and enjoys a high reputation.

　　The fr4 epoxy board has stable electrical insulation performance, good flatness, smooth surface, no pits, and standard thickness tolerance. It is suitable for products with high-performance electronic insulation requirements, such as FPC reinforcement boards, PCB drilling pads, and glass fiber mesons , Potentiometer carbon film printed glass fiber board, precision star gear (wafer grinding), precision test plate, electrical (electrical) equipment insulation support spacer, insulation backing plate, transformer insulation plate, motor insulation, grinding gear, electronic switch Insulation board, etc.

　　3. 3240 epoxy board and fr4 epoxy board are widely used in various industries. They can better choose the suitable board for customers without requiring it, and have a better choice in terms of product quality and product cost.